| Gaithersburg to Kluczbork | 4,396.40 mi (7,075.32 km) |
| Gaithersburg to Knurow | 4,441.08 mi (7,147.23 km) |
| Gaithersburg to Kobylka | 4,457.65 mi (7,173.90 km) |
| Gaithersburg to Kokoszki | 4,290.57 mi (6,905.01 km) |
| Gaithersburg to Kolbuszowa | 4,555.41 mi (7,331.22 km) |
| Gaithersburg to Kolno | 4,444.44 mi (7,152.63 km) |
| Gaithersburg to Kolo | 4,369.37 mi (7,031.82 km) |
| Gaithersburg to Kolobrzeg | 4,192.74 mi (6,747.56 km) |
| Gaithersburg to Koluszki | 4,427.94 mi (7,126.07 km) |
| Gaithersburg to Komorniki | 4,295.95 mi (6,913.66 km) |
| Gaithersburg to Konin | 4,355.36 mi (7,009.27 km) |
| Gaithersburg to Konskie | 4,470.40 mi (7,194.42 km) |
| Gaithersburg to Konstancin-Jeziorna | 4,463.76 mi (7,183.73 km) |
| Gaithersburg to Konstantynow Lodzki | 4,410.82 mi (7,098.53 km) |
| Gaithersburg to Koronowo | 4,305.68 mi (6,929.32 km) |
